IP-Header

Question 1

For which one of the following reasons does Internet Protocol (IP) use the time-to- live (TTL) field in the IP datagram header?

A
Ensure packets reach destination within that time
B
Discard packets that reach later than that time
C
Prevent packets from looping indefinitely
D
Limit the time for which a packet gets queued in intermediate routers
Question 1 Explanation: 
It prevent infinite looping over network . Because each router decrease its value by one and when this (TTL) value become zero , then it is discarded by router silently.
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